<?
/**
* HebCurrency File
* This class handles currencies from the bank of israel xml file
* @author Hadar Porat <hide@address.com>
* @version 1.21
*/

/**
* HebCurrency Class
* @access public
* @author Hadar Porat <hide@address.com>
* @version 1.21
*/

class HebCurrency {

	var $xmlFile = 'http://www.bankisrael.gov.il/heb.shearim/currency.php';
	var $dom;
	var $root;
	var $currencies = array();
	var $locale = 'en';

	var $locales = array (
	'he' => array (
	'SAL' => 'ñì îèáòåú',
	'USD' => 'ãåìø',
	'GBP' => 'ìéù"è',
	'JPY' => 'ééï',
	'EUR' => 'àéøå',
	'AUD' => 'ãåìø àåñèøìé',
	'CAD' => 'ãåìø ÷ðãé',
	'DKK' => 'ëúø ãðîø÷',
	'NOK' => 'ëúø ðåøååâéä',
	'ZAR' => 'øðã',
	'SEK' => 'ëúø ùååãéä',
	'CHF' => 'ôøð÷',
	'JOD' => 'ãéðø',
	'LBP' => 'ìéøä ìáðåðéú',
	'EGP' => 'ìéøä îöøéú',
	)
	);

	/**
	* @desc HebCurrency main fuction
	* @param Locale $locale locale code
	* @return void
	*/
	function HebCurrency($locale = 'en') {

		// check for XML module
		if (!function_exists('domxml_open_file')) {
			$this -> errorMessage("DOM XML module not found");
		}

		// open the file
		if (!$this -> domFile = domxml_open_file($this -> xmlFile)) {
			$this -> errorMessage("Error while parsing the document");
		}
		
		// set locale
		$this -> locale = $locale;

		$elements = $this -> domFile -> get_elements_by_tagname("CURRENCY");

		while (list($key, $value) = each($elements)) {
			$array = array();
			$arrayName = '';
			$child = $value->first_child();

			while ($child) {
				if ($child -> node_name()=='NAME') $array['name'] = $child -> get_content();
				else if ($child -> node_name()=='RATE') $array['rate'] = $child -> get_content();
				else if ($child -> node_name()=='UNIT') $array['unit'] = $child -> get_content();
				else if ($child -> node_name()=='COUNTRY') $array['country'] = $child -> get_content();
				else if ($child -> node_name()=='CURRENCYCODE') $arrayName = $child -> get_content();
				$child = $child->next_sibling();
			}
			
			// locale
			if ($this -> locale<>'en') $array['name'] = $this -> locales[$this -> locale][$arrayName];
			
			// add the item to main array
			$this -> currencies[$arrayName] = $array;

		}

	}

	/**
	* @desc returns last update
	* @return string
	*/	
	function getLastUpdate() {
		$elements = $this -> domFile -> get_elements_by_tagname("LAST_UPDATE");
		$element = $elements[0];
		return $element -> get_content();
	}


	/**
	* @desc get currency by code
	* @param string $code currency code
	* @return array
	*/
	function getCurrency($code = 'USD') {

		if ($this -> isCurrency($code)) return $this -> currencies[$code];
		else return false;

	}

	/**
	* @desc converts currency to NIS
	* @param string $code currency code
	* @param double $value money value
	* @return double
	*/
	function convertFrom($code = 'USD', $value) {

		if ($this -> isCurrency($code)) return ($this -> currencies[$code]['rate'] * $value) / $this -> currencies[$code]['unit'] ;
		else return false;
	}
	
	/**
	* @desc converts NIS to other currency	
	* @param string $code currency code
	* @param double $value money value
	* @return double
	*/
	function convertTo($code = 'USD', $value) {

		if ($this -> isCurrency($code)) return ($value / $this -> currencies[$code]['rate']) * $this -> currencies[$code]['unit'] ;
		else return false;
	}	


	/**
	* @desc finds out if currency exists
	* @param string $code currency code
	* @return boolean
	*/	
	function isCurrency($code = 'USD') {
		if (isset($this -> currencies[$code]) and (is_array($this -> currencies[$code]))) return true;
		else return false;
	}
	
	/**
	* @desc get all currencies
	* @return array
	*/		
	function getAll() {
		return $this -> currencies;
	}

	/**
	* @desc prints error message
	* @param string $message error message
	* @return void
	*/
	function errorMessage($message) {
		echo '<b>FATAL ERROR:</b> ' . $message;
		exit;

	}
}